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"or similarly in Av mode, if you set minimum shutter speed value (auto iso menu) of 1/250, and enable auto iso in the range of 100-12800, camera will choose the suitable iso for the situation and aperture value, and makes sure shutter speed is not slower than 1/250, if it would be, it increases iso.
so you dont have to bother with setting iso in any mode, metering and the camera will take care of it..."
and this is exactly what autoexposure does with ML in M mode. without the option to change the aperture on the wheel, because it will always choose widest aperture, or the lowest value of the Av range.

thanks for your time btw. i have been playing with this expo lock for a while, its not the same function im looking for.
maybe we are talking about two different things.
what i am looking for is the same function as auto iso on any mirrorless camera, or nikon or newer canons. and as i can see in other 5d2 forums, many ppl switched to newer canons because of this feature.
for example in M mode, you set whatever shutter speed you like, along with any kind of aperture. you enable auto iso, and the camera will choose the suitable iso value depending on lighting conditions.
or similarly in Av mode, if you set minimum shutter speed value (auto iso menu) of 1/250, and enable auto iso in the range of 100-12800, camera will choose the suitable iso for the situation and aperture value, and makes sure shutter speed is not slower than 1/250, if it would be, it increases iso.
so you dont have to bother with setting iso in any mode, metering and the camera will take care of it...such a useful feature when shooting without flash.

but the 5dII has an autoiso high limit of 400 in M mode, and no option to change the minimum shutter speed with auto iso in Av mode, making it unusable to shoot people for example, when you need faster shutter speeds. by default in Av, auto iso on, 5d2 will choose the minimum shutter speed, according to the focal length of the used lens...1/80 for 85mm lens. not good for shooting ppl. so you have to manually set the iso in Av mode and M mode too.
canon cameras are different in this regard, for example 7d can do auto iso in M mode, without the 400 upper limit. but no minimum shutter speed feature in Av mode.
newer ones can do both...not as many options like on fuji cameras, but they work.
so i guess its not possible to unlock this auto iso 400 limit in M mode.

using it with autoexposure? doesnt seem to change a thing.
if i disable autoexposure, the whole auto iso 400 limit comes back.

i thought this was a solution for canon 5d II's stupid auto iso limit of 400 in manual mode. or not being able to change the minimum shutter speed value in Av mode with auto iso, unlike in newer canon cameras, like 6d, 70d, 5d3...
it almost works like that, but i can only set the aperture (AV range's bottom limit) in the menu? so if i want to shoot at f4 instead of f1.8 with auto iso, i have to go to the ml menu, to change the av curve...otherwise i can't change aperture value with the wheels. i thought this was a bug, and not on purpose. whats the reason for using this autoexposure mode than? its basically similar to Av+auto iso on canon without the oppurtunity to change the aperture setting on the fly.

i'm in M mode, f9.5-f16 did not work either. now my minimum aperture is f10. cant go any higher or lower.
when i try to spin the wheel which changes the aperture in Manual mode, for a millisecond it shows the changed aperture, but it will reset back to the AV range's minimum value in no time..cant change the shutter speed either, same flickering issue, but it doesn't really bother me because i can set the min shutter speed value.

i tried to change av range to many values, no change. also tried to change lens aperture, tried different lenses. similar results.
too bad, i really like this function, kinda similar to Av+auto iso on canon with wider minimum shutter speed range,i just need to change that aperture value somehow

i tried default settings, haven't changed the curves. thanks!

hi
anyone using autoexposure succesfully with any of the builds? this is the only reason why i want to use ml. it works great in the latest build, only problem is i cannot change aperture value in Manual mode, it only works wide open while autoexposure is ON. if i rotate the aperture wheel, aperture value is flickering in the viewfinder but it does not change. is there any previous build, where this works?
thanks